Practice 1.5 The origin of cells with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
Paper
Level
Question 1
SLPaper 1A
Which of the following characteristics found in a structure necessarily indicates that it is alive?
Question 2
SLPaper 1A
Which statement provides evidence for endosymbiosis?
Question 3
SLPaper 1A
Which pair of features is correct for both a human liver cell and an Escherichia coli cell?
| Human liver cell | Escherichia coli cell | |
|---|---|---|
| A. | contains DNA associated with protein | contains naked DNA |
| B. | has 70S ribosomes | has 80 S ribosomes |
| C. | contains mitochondria | contains mitochondria |
| D. | contains DNA enclosed by a membrane | contains DNA associated with protein |
Question 4
SLPaper 2
1.[5]
Draw a labelled diagram of the molecular structure of DNA, comprising of four nucleotides.
2.[5]
Outline the therapeutic use of stem cells.
3.[5]
Giving one specific example, discuss genetic modification in organisms including the potential benefits and possible harmful effects.
Question 5
SLPaper 1A
Which statement is part of the cell theory?
Question 6
SLPaper 1A
The electron micrograph shows a section through a cell and refers to questions 1 and 2.
Which feature of the cell in the micrograph is consistent with the endosymbiotic theory?
Question 7
HLPaper 1A
What distinguishes prokaryotic cells from eukaryotic cells?
| Prokaryotic cells | Eukaryotic cells | |
|---|---|---|
| A. | no plasma membrane | plasma membrane |
| B. | 80 S ribosomes | 70 S ribosomes |
| C. | Golgi apparatus | mitochondria |
| D. | no internal membrane compartments | internal membrane compartments |
Question 8
SLPaper 1A
A cell contains chloroplasts, plasma membrane and 80 S ribosomes. What type of cell could it be?
Question 9
HLPaper 1A
What is evidence for the endosymbiotic theory?
Question 10
SLPaper 2
1.[1]
State the property of stem cells that makes them useful in medical treatment.
2.[2]
Explain how multicellular organisms develop specialized tissues.
3.[2]
Outline some of the outcomes of the sequencing of the human genome.